Rocker side bearing.



G. A. JOHNSON.

ROCKER SIDE BEARING. APPLICATION FILED 1ULY25, 191?0 Fig! [Q IlllllliW////////////////////////[//%IIIIIIIIIIIQWIIIIII WITNESSES: jgageflzih 0m Patented Apr. 15,1919. /2

UNITED STATES PATENT cr mes.

oEoRGE A. JoHNsoN, or CHICAGO, ILLINoIs, ASSIGNOR TO WI'ILLIAM H. MINER, or

CHAZY, NEW YORK.

ROCKER SIDE BEARING.

* Specification ofiLettersj Patent.

' Patented Apr. 15,1919.

To all whom it may concern:

Be it known that 1,. GEORGE. A. 'J oHNsoN, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Rocker Side Bearings, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings forming a part of this specification.

This invention relates to improvements in rocker side bearings.

The object of the invention is to provide a simple and relatively inexpensive rocker side bearing for railway cars wherein the rocker is suspended under the influence of gravity and the parts so designed that the rocker will be automatically self-centered after each actuation.

In the drawings forming a part of this specification, Figure 1 is a vertical, sectional view, taken transversely of the body and truck bolsters of a railway car and showing my improvements in connection therewith. And Fig. 2 is a sectional view taken substantially on the line 22 of Fig. 1. In said drawing, 10 denotes the upper bearing portion of a truck bolster of a railway car and 11 the corresponding under portion of a car body bolster. The improved side bearing is shown as comprising, broadly, a retaining casting A, an anti-friction rocker B, and a supporting bolt or pin C.

The retaining member A is preferably in the form of a casting and is provided with an upper bearing wall 12, depending side walls 13-13, depending end walls 14-14, perforated ears 15-45 by which the member A is riveted or otherwise secured to the body bolster, and suitable bracing flanges 1616 for the end walls 14. From the preceding description, considered in connection with the drawing, it will be seen that the retaining member A is hollowed out on its under side so as to form a box-like structure to accommodate the rocker B.

The antifriction rocker B is in the form of a casting substantially reniform in cross section. The rocker B is provided with an upper bearing surface 17 which engages with the under face or bearing surface of the portion 12 of the retaining member and in addition, the rocker is provided with a lower curved bearing surface 18 adapted to engage the upper surface of the truck bolsters. Thebearing surfaces 17 and 18 are made, concentric so as to maintain a constant distance between the two bolsters when the rocker 1s 1n service, as w1ll be understood. The rocker is freely supported by means of the bolt C which extends through a suitable perforation in the rocker B and is free to move in elongated slots 19-19 in the side walls of the retaining member A.

It will be noted that the retaining member A is provided on its interior with a plurality of knobs or teeth 2020 which cooperate with corresponding recesses 2121 in the. upper bearing face of the rocker B. In this manner, the rocker B is always positively returned to its central normal position after each actuation since the teeth 20 and recesses 21 will always maintain the same relation between the rocker B and retaining member A. In this manner, I overcome a defect heretofore encountered in some types of ravity side bearings.

The dotted ines in Fig. 1 show one extreme position of the rocker and it will be noted that the lower portions of the end walls 14 are rounded or flared outwardly, as indicated at 22, so as to fit the indented portions 23 on the sides of the rocker and thus limit the movements of the rocker. This construction results in an upwardly directed pressure on the end walls of the retaining member A instead of a straight horizontal outward thrust and thus relieves the strain on the end walls and prolongs the life thereof.

It will be obvious to those skilled in the art that various changes and modifications may be made in the details of construction without departing from the spirit of the invention and I contemplate all changes and modifications that come within the scope of the claims appended hereto.

I claim:

1. .In a side bearing adapted for railway cars and the like, the combination with a retaining casting provided on its under 'side with a bearing surface and depending spaced side walls, of an anti-friction rocker having an upper bearing surface cocperable with that of said casting and provided also with a lower bearing surface adapted to engage an opposed member, and means for suspending said rocker freely from said casting, said means comprising a rod extending transversely through sa1d rocker, the

ends of said rod being movable in slots pro vided in said depending side Wells of the casting, sdid' slots b'i'iig formediii" a'c'cofug ance With the path traveled by the 'iids'o'if said rod as the latter moves With the;rocker;

2. In a side bearing for railway cars and the like, the combination With a hollow box came: at tlr'iiv azent myw obiaiiea "x6e rocker freely from said casting, said rocker htvin recesses in its upper faoe for coopfafltioi'iwith s'ilidpr'o'jeotiofis, afid' means 15 for limiting the movement of'said rocker.

In vvitness that I claim the foregoing .I have hereunto subscribed my name this' 18th day of July, 1918.

GEORGE A. JoHN'soNi Witnesses META SCHMIDT, 1 7 JOSEPH. HARRIS. 

